Theory Hair Studio is San Diego's premier full-service hair salon, located in the vibrant Little Italy neighborhood. With over 18 years of experience, our team is dedicated to exceeding your hair and beauty expectations with every visit. We specialize in Color, Lash, and Hair Extensions — offering Micro Ring and Tape Extension methods tailored to your unique style. We partner with top brands including L'Oreal Professionnel, Redken, Wella, Goldwell, Schwarzkopf, Malibu C, and Oribe to deliver personalized, high-quality results. From Dyson blowdryers to Olaplex treatments, every detail of your experience is thoughtfully curated. At Theory Hair Studio, we don't just do hair — we bring out your natural beauty and create a look that's uniquely yours.